37x12.50R20 vs 37x13.50R22
37x13.50R22 is 0.0% taller (0.00 in) and 1.00 in wider than 37x12.50R20.
37x13.50R22 and 37x12.50R20 are the same overall diameter, so the speedometer stays accurate.
| 37x12.50R20 | 37x13.50R22 | Change | |
|---|---|---|---|
| Diameter | 37.00″ | 37.00″ | 0.00″0.0% |
| Width | 12.50″ | 13.50″ | +1.00″+8.0% |
| Sidewall | 8.50″ | 7.50″ | −1.00″−11.8% |
| Circumference | 116.2″ | 116.2″ | 0.0″0.0% |
| Wheel | 20″ | 22″ | +2″ |
| Revs per mile | 545 | 545 | 0 |
Real speed on 37x13.50R22.
Change in height under the axle.
On the same wheel, split inboard and outboard.
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37x12.50R20 or 37x13.50R22?
Can I use 37x13.50R22 instead of 37x12.50R20?
37x13.50R22 and 37x12.50R20 are the same overall diameter, so the speedometer stays accurate. Also match or beat the original load index and speed rating, and check that the wheel width suits the new tire.
Will my speedometer be off?
At an indicated 60 mph on 37x13.50R22 you are really doing 60.0 mph if the speedometer was set up for 37x12.50R20. Going the other way, 37x12.50R20 would make it read 60.0 mph at a real 60.
How much ground clearance does it change?
Half the diameter difference: 0.00 in (0 mm) under the axle.